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What would you like to do?
Lets play with decorators
require "delegate"
class A
def self.class_meth
"class method"
end
def self.class_meth_with_args a, b
"class method args: " + a + b
end
def meth
"instance method"
end
end
#
#It works!
module DelegateWholeClass
#borrowed from Delegate.delegating_block
def self.delegate_block(mid, target)
lambda do |*args, &block|
begin
target.__send__(mid, *args, &block)
ensure
$@.delete_if {|t| /\A#{Regexp.quote(__FILE__)}:#{__LINE__-2}:/ =~ t} if $@
end
end
end
end
def DelegateWholeClass(superclass)
klass = DelegateClass(superclass)
klass_methods = superclass.public_methods - klass.public_methods
klass_methods.each do |meth|
klass.define_singleton_method(meth,DelegateWholeClass.delegate_block(meth, superclass))
end
klass
end
class T < DelegateWholeClass(A)
def meth
super + "<- from A"
end
def t_meth
"T:" + meth
end
def self.t_class_meth
"T class meth"
end
def self.class_meth
super + "<- from A"
end
end
t = T.new A.new
puts t.meth
puts T.class_meth
puts T.class_meth_with_args "bla," , 1.to_s
puts t.t_meth
puts T.t_class_meth
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